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City water profile

Granger water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Granger, Iowa.

Median indexed hardness

351PPM

One indexed ZIP

Range 351–351 PPM

State comparison
70 PPM above
State hardness rank
#159 of 683
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Granger has 1 published ZIP profile across Polk County. The indexed median is 351 PPM, compared with 281 PPM across Iowa.

Among the 683 Iowacities with an indexed median, Granger ranks #159from highest to lowest. Across all 723 state ZIP profiles, available estimates run from 182to 834 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
9.7 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jun 13, 2017 to Aug 1, 2024.

ZIP directory

Water reports in Granger

Open a ZIP for site-level provenance and measurements.

ZIP code

50109

Very Hard

351 PPM

Nearest site
9.7 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Granger Muni Water Supply

PWSID IA2537001

Groundwater
System population served
1,654
Last reported
Jun 17, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
NitriteIA2537001Jan 1, 2024Resolved
Public NoticeIA2537001Apr 26, 2021Unaddressed

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Granger

Is the water hard?

The indexed city median is 351 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.